Browsing Institute for Microbial Biotechnology & Metagenomics by Author "Tuffin, Marla I."
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Hypolithic and soil microbial community assembly along an aridity gradient in the Namib Desert
Stomeo, Francesca; Valverde, Angel; Pointing, Stephen B.; McKay, Christopher P.; Warren-Rhodes, Kimberley A.; Tuffin, Marla I.; Seely, Mary; Cowan, Donald A. (Springer, 2013)The Namib Dessert is considered the oldest desert in the world and hyperarid for the last 5 million years. However, the environmental buffering provided by quartz and other translucent rocks supports extensive hypolithic ... -
Selection of Clostridium spp. in biological sand filters neutralizing synthetic acid mine drainage
Ramond, Jean-Baptiste; Welz, Pamela J.; Le Roes-Hill, Marilize; Tuffin, Marla I.; Burton, Stephanie G.; Cowan, Donald A. (Wiley, 2013)In this study, three biological sand filter (BSF) were contaminated with a synthetic iron- [1500 mg L-1 Fe(II), 500 mg L-1 Fe(III)] and sulphate-rich (6000 mg L-1 SO2/4-) acid mine drainage (AMD) (pH = 2), for 24 days, to ... -
Selection of diazotrophic bacterial communities in biological sand filter mesocosms used for the treatment of phenolic-laden wastewater
Ramond, Jean-Baptiste; Welz, Pamela J.; Tuffin, Marla I.; Burton, Stephanie G.; Cowan, Donald A. (Springer Verlag, 2013)Agri effluents such as winery or olive mill waste-waters are characterized by high phenolic concentrations. These compounds are highly toxic and generally refractory to biodegradation. Biological sand filters (BSFs) represent ... -
Structure and functional characterization of pyruvate decarboxylase from Gluconacetobacter diazotrophicus
van Zyl, Leonardo Joaquim; Schubert, Wolf-Dieter; Tuffin, Marla I.; Cowan, Donald A. (BioMed Central, 2014)BACKGROUND: Bacterial pyruvate decarboxylases (PDC) are rare. Their role in ethanol production and in bacterially mediated ethanologenic processes has, however, ensured a continued and growing interest. PDCs from ...